ED
Edward Duffy — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Charleston, South Carolina
Our Model Tree links this Edward Duffy across the 1910 and 1920 US Censuses in Charleston, South Carolina (XGBoost, ~Confirmed) — first a son (b.~1900), then head of a 10-person household.
Age 20
b. ~1900
Male
Son
Born: South Carolina
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Charleston, South Carolina |
| Surname | Duffy |
| Given Name | Edward B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Additional Details | |
| Occupation | App. Machinist |
| Industry | Navy Yard |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | App. Machinist |
| Township / Ward | Charleston City |
| Est. Birth Year | ~1900 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
10 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Edward | Age | Birth yr |
|---|---|---|---|---|
| Annie Duffy | Spouse | — | 46 | ~1874 |
| Annie Duffy | Daughter | — | 23 | ~1897 |
| Mary Duffy | Daughter | — | 13 | ~1907 |
| Susanne Duffy | Daughter | — | 11 | ~1909 |
| James Duffy | Son | — | 18 | ~1902 |
| John Duffy | Son | — | 17 | ~1903 |
| Elizabeth Daly | Other | — | 63 | ~1857 |
| John Duffy | Head | — | 50 | ~1870 |
| Alice Duffy | Daughter | — | 9 | ~1911 |
| Edward Duffy | Son | — | 20 | ~1900 |
Census Appearances
1910
Charleston, South …
Son, age 10
Charleston, South Carolina · implied b. ~1900 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | Edward |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1920
Charleston, South …
Son, age 20
Charleston, South Carolina · implied b. ~1900 — 10 household members
| Surname | Duffy |
| Given Name | Edward B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | App. Machinist |
| Industry | Navy Yard |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Edward Duffy across 2 US Census years (1910 and 1920) in Charleston, South Carolina, using XGBoost record linkage.
Show:
This person
Anchor record
Edward Duffy
Son · 1920 · age 20 · b. ~1900 · South Carolina
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Sibling
Annie Duffy
Sibling · 1920 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Duffy
Sibling · 1920 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Duffy
Sibling · 1920 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Duffy
Sibling · 1920 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Susanne Duffy
Sibling · 1920 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Duffy
Sibling · 1920 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Charleston, South Carolina
Open full size
1920 US Federal Census — Charleston, South Carolina
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1687unit:0725)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Isaac J. Slotchiver | 60 | Head | Manager | Roumania |
| 2 | Sadie Slotchiver | 26 | Daughter | — | Roumania |
| 3 | Etta Slotchiver | 25 | Daughter | Manager | Roumania |
| 4 | Abe J. Slotchiver | 23 | Son | Manager | Roumania |
| 5 | Oswald G. Lohas | 31 | Head | Pattern-Maker | Texas |
| 6 | Elsie L. Lohas | 30 | Wife | — | Tennessee |
| 7 | Mary Eliz. Lohas | 6 | Daughter | — | Tennessee |
| 8 | Doris L. Lohas | 1 | Daughter | — | South Carolina |
| 9 | James L. Pruitt | 35 | Head | Mechanic | Alabama |
| 10 | Rosa H. Pruitt | 32 | Wife | — | Alabama |
| 11 | Ruby E. Pruitt | 8 | Daughter | — | Alabama |
| 12 | Josephine E. Pruitt | 5 | Daughter | — | Alabama |
| 13 | James L. Jr. Pruitt | 2 | Son | — | Alabama |
| 14 | Albert J. Whitley | 26 | Head | App. Joiner | South Carolina |
| 15 | Nellie G. Whitley | 21 | Wife | — | South Carolina |
| 16 | Dorothy G. Whitley | 3 | Daughter | — | South Carolina |
| 17 | Harold E. Whitley | 1 | Son | — | Georgia |
| 18 | Albert W. Whitley | 0 | Son | — | South Carolina |
| 19 | Malcolm E. Hughes | 39 | Uncle-in-law | Contractor | South Carolina |
| 20 | George Phil. Hundegger | 36 | Head | Machinist | Georgia |
| 21 | Mildred Hundegger | 31 | Wife | — | Maryland |
| 22 | Anna M. Bohlcke | 57 | Head | Grocer | South Carolina |
| 23 | Mary E. Laris | 57 | Roomer | Clerk | South Carolina |
| 24 | Josephine L. Hughes | 63 | Roomer | — | South Carolina |
| 25 | John J. Duffy | 50 | Head | Joiner | South Carolina |
| 26 | Annie E. Duffy | 46 | Wife | — | South Carolina |
| 27 | Annie E. Duffy | 23 | Daughter | Clerk | South Carolina |
| 28 | Edward B. Duffy THIS PERSON | 20 | Son | App. Machinist | South Carolina |
| 29 | James E. Duffy | 18 | Son | Messenger | South Carolina |
| 30 | John J. Jr. Duffy | 17 | Son | Asst. Clerk | South Carolina |
| 31 | Mary A. Duffy | 13 | Daughter | — | Georgia |
| 32 | Susanne Duffy | 11 | Daughter | — | South Carolina |
| 33 | Alice G. Duffy | 9 | Daughter | — | South Carolina |
| 34 | Elizabeth M. Daly | 63 | Sister | — | South Carolina |
| 35 | John W. H. Zink | 47 | Head | Book Estimate | South Carolina |
| 36 | Mary H. Zink | 49 | Wife | — | South Carolina |
| 37 | Mildred H. Zink | 16 | Daughter | — | South Carolina |
| 38 | Etta Zink | 44 | Roomer | Stenographer | South Carolina |
| 39 | Charles C. Tyree | 39 | Head | Shipwright | Alabama |
| 40 | Amanda Tyree | 33 | Wife | Machine Operator | Alabama |
| 41 | Elmira P. Tyree | 14 | Daughter | Operator | Alabama |
| 42 | William E. Parks | 34 | Head | Machine Operator | South Carolina |
| 43 | Lillie A. Parks | 16 | Son | Belt Boy | Alabama |
| 44 | William D. Parks | 14 | Son | Mechanic | Alabama |
| 45 | Mildred S. Parks | 12 | Daughter | — | Alabama |
| 46 | Joseph A. Quinton | 30 | Head | Machinist | New Jersey |
| 47 | Adelaide Quinton | 25 | Wife | — | New York |
| 48 | Thomas O. Cox | 33 | Head | Policeman | South Carolina |
| 49 | Lula M. Cox | 30 | Wife | — | South Carolina |
| 50 | James R. Cox | 7 | Son | — | South Carolina |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)